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BP323 Jigsaw puzzle pieces can be assembled into a square vs. jigsaw puzzle pieces cannot be assembled into a square.
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COMMENTS

Although it takes time to check each individual example, the right answer is likely the first thing a person would think of upon seeing this.

CROSSREFS

Adjacent-numbered pages:
BP318 BP319 BP320 BP321 BP322  *  BP324 BP325 BP326 BP327 BP328

KEYWORD

notso, hardsort

CONCEPT jigsaw_puzzle (info | search),
tiling (info | search),
imagined_motion (info | search),
motion (info | search)

AUTHOR

Aaron David Fairbanks

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